AltaSim Technologies guides engineers through Multiphysics simulation projects with less frustration and more confidence in their results, so that they can bring their products to market more rapidly, at lower costs and with optimized designs.
What follows are tips and tricks from our engineers who have countless hours using COMSOL Multiphysics.
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Thermal stresses are an important design concern for many engineering applications. When temperatures change, materials can deform or warp leading to the build-up of internal stresses even without the presence of external constraints which can further increase thermal stresses. Modeling and simulation can calculate the deformations, stresses and changing contact pressures using thermal-structural interaction techniques. […]Read More
Many engineers solve heat transfer challenges regularly. Over the last 20 years, AltaSim has developed hundreds of simulations for our clients that include heat transfer as a component. This Tip comes from our experience in solving a heat transfer problem that included thin layers of different materials. Solid elements are the most widely used type […]Read More
Engineers post process their simulation results for reasons that range from better understanding their results to communicating those results to others. Developing labels that clearly identify the conditions for a simulation communicates the critical input parameters for the plotted results. In this Tip and Trick, the simulation engineers at AltaSim will show a way to […]Read More
An electromagnetic wave consists of a coupled oscillating electric field and magnetic field which are always perpendicular to each other. By convention, the “polarization” of electromagnetic waves refers to the direction of the electric field. In 3D geometry, arbitrary polarization is naturally defined by the prescribing the directions of all three components of the electric […]Read More
In working with our customers, AltaSim often seeks to solve an initial problem in two dimensions to save computational time. The CAD we receive from our customers is routinely in three dimensions, and our engineers need to reduce the dimensionality of the solution space. In the past, our engineers spent significant time re-creating CAD in […]Read More
The significant flexibility of COMSOL Multiphysics represents one of the primary reasons AltaSim uses this software as our main simulation tool. In this installment of our Tips & Tricks, we are going to review the discontinuous Galerkin (DG) method that COMSOL has implemented. AltaSim has found that for the cases described in this article, DG […]Read More
At virtually every step of the model creation process, you need to select and apply materials, physics boundary conditions, and other settings to your model geometry. Bookkeeping of these settings can be challenging, especially when you re dealing with large, complex geometries and multiple physics interfaces. In COMSOL Multiphysics, Selections provides a tool to organize your model […]Read More
Developing solutions using Computational Fluid Dynamics (CFD) often challenges simulation engineers. These simulations may require long computational times and large amounts of computer memory. AltaSim regularly solves complex CFD problems and finds that meshing is a critical component for run-time and computer memory issues. To help you solve your CFD problems with less frustration and […]Read More
As COMSOL Multiphysics evolves, methods to include important features in simulations change. Coupling temperatures to different physics is a common need for multiphysics simulations. COMSOL has made changes that effect temperature coupling. Our clients have asked about the warning signs they get when using temperature coupling, and we would like to share with you our […]Read More
Making accurate physics predictions using simulations requires a knowledge of the material properties and how to implement them correctly in the software. This is particularly important in analyses involving thermal expansion when the coefficients of thermal expansion (CTEs) of the materials vary significantly with temperature. For example, optical devices that operate in the vacuum of […]Read More